How do I upgrade from Windows 20H2 to 21H1?

Upgrade to Windows 10 21H1 from version 20H2 or 2004

1. Open Settings on Windows 10.
2. Click on Update & Security.
3. Click on Windows Update.
4. Click the Check for updates button (if applicable).
5. Under the “Feature update to Windows 10, version 21H1” section, click the Download and Install now button.